ISR 4XXX

[Leonardo Santana]

Hello CSC,

I have one doubt about the new ISRs 4XXX.

At the Cisco IOS dowload page has two options of IOS:

Release Denali-16.3.5  

Release 3.16.6S 

Whats the difference between them?

Regards

Leonardo Santana

[Slavik Bialik]

Hi, you can use this tool to compare between the 2 versions:

http://cfn.cloudapps.cisco.com/ITDIT/CFN/jsp/compareImages.jsp

In conclusion, the Denali version includes more features (you can see those in the compare tool above).

So you can upgrade to Denali or not, it's up to you. I have few 44XX but can't see a good reason to upgrade it to Denali for now, everything's needed in my deployments are fully supported in the current firmware version, for me at least.

[Chris Deren]

+5 Slavik for excellent response.

In nutshel Cisco in their wisdom decided to skip from version 3.17 of IOS-XE code all the way to 16.X code, not 4.X but 16.X, hence I believe your confusion. Basically Denali is the next iteration of IOS-XE.